From 83e4db24fe730532348657a0ec2ded90a042e2e1 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 13 Feb 2026 04:15:24 +0000
Subject: [PATCH] Fix null check logic for screen detection

Co-authored-by: emako <24737061+emako@users.noreply.github.com>
---
 QuickLook/ViewerWindow.Actions.cs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/QuickLook/ViewerWindow.Actions.cs b/QuickLook/ViewerWindow.Actions.cs
index 6fc9ced..713f7e1 100644
--- a/QuickLook/ViewerWindow.Actions.cs
+++ b/QuickLook/ViewerWindow.Actions.cs
@@ -105,10 +105,14 @@ public partial class ViewerWindow
             }
             
             // Get the screen bounds where the window is currently located
-            var screen = WinForms.Screen.FromHandle(new WindowInteropHelper(this).Handle) ?? WinForms.Screen.PrimaryScreen;
+            // Screen.FromHandle never returns null, but PrimaryScreen can be null in edge cases
+            var screen = WinForms.Screen.FromHandle(new WindowInteropHelper(this).Handle);
+            if (screen == null)
+                screen = WinForms.Screen.PrimaryScreen;
+            
             if (screen == null)
             {
-                // Fallback to default screen bounds if no screen is available
+                // Edge case: no screen available (e.g., no monitors connected)
                 Debug.WriteLine("Unable to get screen bounds for fullscreen mode");
                 return;
             }